Demountable rim



Dec. 4 1923. I v 1,476,528

c. G. LUNDsTRoM DEMOUNTABLE RIM Filed July l, 1922 2 Sheets-Sheet 1 y y Z9/wam l Dec. 4 1923.

C. G. LUNDSTROM DEMOUNTABLE RIM 'Filed July'l. 1922 2 Sheets-Sheet 2 ffm/@fijar t f4 MGi Patented Dee. 4, 1923.

iran stars CARL G. LUNDsTRoM, or CLEVELAND, 10H10'.

DEr/IOUNTABLE Rin.

Application filed July 1, 1922.. ser-iai No. 572,351.,

To c/.Z w71 om t may concern.'

Be it known that I, CARL C. LUNDs'rRoM, a citizen of the United States, residing yat Cleveland, in the Vcounty of Cuyahoga Vand 5 State of Chio, have invented certain new and useful Improvements in Bemountable Rims, of which the following is a specification.

rihisv invention relates vto demountable rims, and has for its principal object to provide Va rim made in sections, which can readily be assembled for the purposey of holding a tire. Although capable of use with various kinds of pneumatic and'cushion tires, it is particularly suited for vthe latter, and was especially designed for use with a tire such as that disclosed in my pending application for resilient tire, Serial No. 500,422 filed September 13, 1921. Said pending application discloses a cushion tire having an outer tread section and an inner cushion section, and for the purpose of the present application, and merely as an eX- ample, a somewhat similar tire is illustrated in the present case, certain modiications however being made as will more fully appear from the following description.

The rim is of the sectional channel type and embodies three main members consisting of a cross split band or base ring, and a pair of symmetrical ring anges which are,

assembled and interloclred with the band when in use. The rim may be mounted on any suitable felly or felly band, one of the V standard kinds being illustrated.

The invention is illustrated in the accompanying drawings in which Fig. 1 is a side view of the rim with a tire thereon. Fig. 2

is a fragmental enlarged inside plan view of the rim. Fig. 3 is a cross section of the rim with the tire thereon, and mounted upon a felly. Fig. 4 is a section of the rim with the parts separated. l l

Referring specifically to the drawings, 1

indicates an inner circular band or base membervwhich is split as indicated at 2,y

theside of this rib toward the centerline of the wheelbeing beveled as indicated at 10a and the oppositeside beingsquare or straight 7o as indicated at 10", thereby defining one wall' of a groove 10c which extends around-'each Y' member. rlhe inner edge of the base porv tion`9 is enlarged or thickened and beveled as indicated at 9a, said bevel being presentedV 75 outwardly or away from the center line of the wall. Y i

The tire, shown merely for purposes of illustration, comprises an outer tread member 8 and an inner cushion member 18 which has so recesses or'pockets 18a to form air cushions. These tire members are gripped at the sides by the Hanges 7 as shown. i The rim when assembled is vmounted uponk a'felly band 2O extending around the felly 85 19, and thisV fellyfband has at oneedge a beveled surface 21' and at the opposite edge a beveled surface 22, and against the latter fits a clamping ring23, wedge-shaped in cross section, which is pressed home by clipsA 24 and nuts 26 on bolts 25 projecting from the felly. y Y The inner side of the cushion member 18 has at each edge a projecting rib 11 which is adapted to fit within the groove 10c above 95 described. To assemble the parts, the tire members 18 and 8 are placed on the band 1 and the side rings 6 are then pressed into place, the portions r9 ofthe side rings being forced inwardly under the edges of the band 1, and in this action the flanges 3 of the band ride up the -inclines 10iL and finally snap over the ribs 10, the split in the band 1permitting the band to expand for this purpose. 105 When fully forced together the flanges 3 engage and interlock over the ribs 10, and at the same time the inner edges of the por-V tions 9 enter and rest in the seats 5 in lthe ribs 4. The rim and tire are then mounted 11o on the felly, the incline 9a fitting against the bevel 21 on the felly band. The wedge ring 23 is kthen `set in 1place between the bevel 9a on the other side 'ringl and the bevel 22 on the felly band7 the Clips'V are tightened V to hold the rim on the felly. To separate the parts the rim is slipped off the fellvby removing the clips, andv then the band` i is the cushiontireyis used, the cushionfmein ber 18. beingV Vmade of comparatively soft may be. expanded fby.approprii/ite pressure expanded from the inside until the flanges 3 aie'disengaged 'from the ribs 10,'permitting the side flanges to drop oil" and releagingtlie tire. The .riinrinay thus bep-readily assembled or disassembled. The tongues or ribs 1l are compressed when the side yHangers 6 rare forced vinto place, `thereby forming a tight )oint Which-sealsv the air pockets or' Cushions of the cushion member. The pres sure or tension of the tire' members tends to contract vthe bandv l to hold itengaged With theside ringsa and if a pneumatic tire is` usednthe air pressure Vin ythe tire Vassists thisopera-tion, but when deflated the band on the inside,f to disengagetheparts. Siml ilar :pressure Willlhave the' saine resultwhen rubber Whieh Willbcompress toy permit 'such disengagement, ItA may bel noted that since- V therside rings 6 are continuous, the clamp-l ingpressureofr the, ring 23 is sustained bv,

saidrings 6 and Conseeguentb7 does not tend to'expandfthe base band l.

The invention is not limited to the'particular form shown, but; various changes may;b ema.de .Within Athe-,scope of the fol- Ylowing claims.v

I claim: I n

l. .A rimcomprlslngan inner split band,

i andga *pair of sideJ rings-having inner "p0rtions-Which yfit .Withinfand interlock ,the sadband..

Zliiriinv comprising` anvinnerexpansible' ban-d havingfiianges projecting inwardly at its edgesyandapair ot' side rings havingbasefportions Which fit Within- .theA

band -and provided with lcircular ribs inten locking the saidV flanges.4

A rim comprising a split band having Y inwardly projecting flanges at kits side edges, and Ya pair'of side rings adapted to engage a tire, and having base portions which fit Within the band 'and are provided Withcireular ribs\.vl'1ich snap under and interlock with said flanges when said base portions are forced within ,theV band.

. 4,-. rim having a splitband provided with a. flange projecting inwardly atone edge thereof and a` ren'iovable' side-ring adapted te engage a tire and having portion adapted to fit Within the band and Y having flanges projecting inwardly at its. edges9 and a pair of side: rings adapted tof engage a tire, eachof said sidev rings having a base portion Whichflits Witlnnffene edgeofkthe band, said baseiportion having on `its outer sidef a ribivvhiehinterloclrs with a flange on the-band; and'fhavingon its in# ner side aninclin'ed surface.A adaptedtoiitV against acla-nping -me'rnber mounted-oniy a' felly. Y

Ink testimony Whereoil my signature V-in Vpresence of vtwo Witnesses.

CARLG; vLUNDS'IROli/L`L Witnesses B. C, LUNns'rRoM, JOHN Af BoMiviHaRD'r. Y 

